CBCT is a recent technology using low dose of X- ray in comparison to CT and have high spatial resolution which gives image high contrasting structures. Evidence-based guidelines on how and when to use of CBCT have been developed by a Multidisciplinary team consisting of dentists, dental radiologists, medical physicists and dental specialists. Provisional guidelines were developed in 2009 (SEDENTEXCT 2009) and Final guidelines in 2011which were again reviewed in 2012.